I have 14 wordpress sites in different niches and i'm using this plugins:
Blog Search
Google XML Sitemaps
Platinum SEO Pack
KB Linker
Similar Posts
Please Link 2 Me
Similar Posts
Meta Robots WordPress Plugin
seo-friendly-images
Plugin WP-NoExternalLinks
wp-super-cache
fuzzy-seo-plugin
xml-video-sitemaps-for-google
kb-robot
uCan Post
Easy-Contact
I think this list will be helpful.
Blog Search
Google XML Sitemaps
Platinum SEO Pack
KB Linker
Similar Posts
Please Link 2 Me
Similar Posts
Meta Robots WordPress Plugin
seo-friendly-images
Plugin WP-NoExternalLinks
wp-super-cache
fuzzy-seo-plugin
xml-video-sitemaps-for-google
kb-robot
uCan Post
Easy-Contact
I think this list will be helpful.